Announcing the latest release of lo with lots of good gifts! 🎁
🌊 First, a big thanks to @d-enk for making lots of performance improvements in the recent weeks.
🧪 Second, this release introduces a new simd experimental package. If you run on an amd64 architecture and a recent CPU, you can perform very fast operations thanks to SIMD CPU instructions.
-> Documentation: https://lo.samber.dev/docs/experimental/simd
💥 Third, this version adds *Err variants of many lo helpers (like MapErr, FlatMapErr, ReduceErr, etc.) whose callbacks can return an error and short-circuit execution when one occurs.
Note
The simd sub-package is considered not stable. We might break the initial API based on developers' feedback in the coming months.
Features & improvements
- feat: adding SIMD helpers by @samber in #801
- feat: adding Error variants: MapErr, FlatMapErr, ReduceErr... by @samber in #823
- feat: support for buffer iterator by @mimol91 in #824
- feat: add Take, TakeWhile, FilterTake, Window, and Sliding functions by @juliazadorozhnaya in #760
- feat: add a Concat slice function. by @FGasper in #714
- feat: add iterator slice helpers by @juliazadorozhnaya in #791
- feat(it): adding loit.Concat by @samber in #722
- feat: Allow Union/Intersect to take many lists by @frankywahl in #181
- feat: Add Clone function to return shallow copy of slice collections by @quexer in #732
- feat: IntersectBy by @ghosx in #653
- feat: Support Custom Assert by @RelicOfTesla in #755
- feat: Must support Custom error handler. by @RelicOfTesla in #752
- feat: WithoutNth handle non-comparable types by @urisimchoni in #774
- refactor: remove unnecessary type arguments in
NewThrottleby @d-enk in #773 - refactor: lo.IntersectBy + adding loit.IntersectBy + adding doc by @samber in #739
- fix: rename IsSortedByKey to IsSortedBy by @NathanBaulch in #735
- fix(iter/tuples): support break iteration over Zip[By] seq by @d-enk in #757
- fix(it.Mode): align behavior with lo.Mode and ensure consistent slice… by @intojhanurag in #711
- fix: improve Clone function to preserve nilness and avoid liveness issues by @quexer in #740
- fix: reset n counter per iteration in it.Replace by @LikimiaD in #799
- fix: make Ellipsis operate on runes instead of bytes to prevent Unicode truncation by @veeceey in #796
- fix: correct
DropByIndexhandling of negative indices out of bounds by @d-enk in #778
Deprecation
Performance improvements
- feat: Optimize UniqMap to reduce unnecessary slice preallocation by @ivolkoff in #710
- refactor(it): simplify DropLast, TrimSuffix, TrimPrefix and use range loops by @d-enk in #782
- bench: fix iterators to actually iterate in benchmarks by @d-enk in #781
- refactor: simplify slice cut/trim prefix/suffix functions by @d-enk in #787
- perf: optimize Sliding by pre-allocating result capacity by @d-enk in #783
- refactor: improve SamplesBy performance and revert non-panic behavior for negative count by @d-enk in #786
- feat(perf): speed up some functions with linear complexity O=n2 -> O=2n by @samber in #726
- perf: only allocate a single map in Intersect by @NathanBaulch in #736
- perf: preallocate Words string buffer by @NathanBaulch in #728
- refactor: improve lo[it].Intersect[By] readability and performance by @d-enk in #756
- perf: preallocate result slice in
SamplesByby @d-enk in #766 - perf: optimize
PartitionByby eliminating redundant append by @d-enk in #765 - perf: correct prealloc of the result in
FindUniques/Duplicates[By]by @d-enk in #764 - perf: use
Ternary()insteadIf().Else()inRange/RangeFromby @d-enk in #770 - perf: optimize it.Trim to use DropLastWhile(DropWhile(...)) by @d-enk in #780
- perf: replace Min/Max(Range) with Min/MaxIndexBy in DispatchingStrategy by @d-enk in #779
- perf: preallocate result slice in RangeWithSteps by @d-enk in #820
- perf: avoid unnecessary error allocation in NthOr, NthOrEmpty by @d-enk in #817
- perf: optimize Zip and ZipBy functions by @d-enk in #818
- perf: lazy it.Reverse iteration instead of in-place mutation by @d-enk in #814
- perf: optimize Substring to work directly with strings instead of converting to runes by @d-enk in #822
- perf: optimize it.CountBy by removing Filter iterator chain by @d-enk in #813
- perf: optimize it.Find to avoid unnecessary allocations by @d-enk in #811
- perf: optimize it.ContainsBy/EveryBy/SomeBy/NoneBy to avoid unnecessary allocations by @d-enk in #812
- refactor: simplify for loop by @d-enk in #772
- refactor: remove some redundant checks by @d-enk in #771
- refactor: simplify
it.HasSuffiximplementation by @d-enk in #767 - refactor: improve Slice logic and fix docstring by @d-enk in #785
Thanks @d-enk !!
Other (doc, tests, style...)
- test: adding missing test cases to ellipsis by @samber in #809
- fix(test): Increase timeout values in concurrency tests by @samber in #775
- refactor: reorganize llms.txt and add missing helpers by @samber in #723
- Fix Clone() go playground link in README by @sethisernhagen in #761
- Intersect CI test fix by @frankywahl in #731
- lint: fix inconsistent callback function parameter names by @NathanBaulch in #730
- style: fix linter by @samber in #802
- fix: update Play links for Async functions in concurrency.go by @Weeranieb in #724
- lint: use Keyify internally by @NathanBaulch in #691
- Fix references to "lo" instead of "ro" by @pgr0ss in #713
- style: reduce the number of files in root directory by @samber in #719
- style: move img/ directory into docs/static/img by @samber in #721
- refactor: use separate variables for each iter.Pull in it.Zip functions by @d-enk in #816
- refactor: remove redundant map zero value initialization in throttleBy by @d-enk in #815
- doc: explain chunkstring inconsistency by @samber in #789
- doc: fix package name from "lo" to "it" by @samber in #794
- doc(exp,simd): adding warning about API stability for code under exp/ by @samber in #808
- doc(maxby): adding comment to explain inconsistency by @samber in #727
- doc: adding some conventions for callback naming by @samber in #738
- docs: fix typos by @alexandear in #745
- chore(tests): some test improvements by @samber in #725
- chore(ci): improve go version management in CI by @samber in #806
- chore(ci): adding codeql by @samber in #819
- style(simd): rename sse to avx by @samber in #821
Dependencies
- chore(deps): bump lodash from 4.17.21 to 4.17.23 in /docs by @dependabot[bot] in #777
- chore(deps): bump webpack from 5.102.0 to 5.105.0 in /docs by @dependabot[bot] in #793
- chore(deps): bump actions/setup-node from 5 to 6 by @dependabot[bot] in #716
- chore(deps): bump marked from 16.3.0 to 16.4.1 in /docs by @dependabot[bot] in #717
- chore(deps): bump js-yaml from 3.14.1 to 3.14.2 in /docs by @dependabot[bot] in #741
- chore(deps): bump node-forge from 1.3.1 to 1.3.2 in /docs by @dependabot[bot] in #744
- chore(deps): bump ajv from 6.12.6 to 6.14.0 in /docs by @dependabot[bot] in #807
- chore(deps): bump actions/checkout from 5 to 6 by @dependabot[bot] in #747
- chore(deps): bump golangci/golangci-lint-action from 8 to 9 by @dependabot[bot] in #746
- chore(deps): bump marked from 16.4.1 to 17.0.1 in /docs by @dependabot[bot] in #748
- chore(deps): bump mdast-util-to-hast from 13.2.0 to 13.2.1 in /docs by @dependabot[bot] in #750
- chore(deps): bump express from 4.21.2 to 4.22.1 in /docs by @dependabot[bot] in #751
New Contributors
- @ivolkoff made their first contribution in #710
- @intojhanurag made their first contribution in #711
- @pgr0ss made their first contribution in #713
- @Weeranieb made their first contribution in #724
- @frankywahl made their first contribution in #181
- @quexer made their first contribution in #732
- @alexandear made their first contribution in #745
- @juliazadorozhnaya made their first contribution in #760
- @sethisernhagen made their first contribution in #761
- @RelicOfTesla made their first contribution in #755
- @urisimchoni made their first contribution in #774
- @LikimiaD made their first contribution in #799
- @veeceey made their first contribution in #796
Full Changelog: v1.52.0...v1.53.0